From Boulenger 1909,  pp.  197-198.

Depth of body 3 ½ to 4 ½ times in total length, length of head 4 1/2 to 5 times. Head 2 to 2 ½  times as long as broad, 1 1/4 to 1 1/3 as long as deep; snout as long as or a little shorter than eye, which is lateral and 3 to 3 ½ times in length of head ; adipose eyelid well developed ; interorbital region convex, its width 3 tool- times in length of head ; maxillary not extending to below anterior border of eye ; 14-18  (6-8 / 8-10) teeth in upper jaw, 10 (8 / 2) in lower ; lower border of second suborbital as long as eye. Gill-rakers long and slender, 17-20 on lower part of anterior arch. Dorsal II 8, originating above ventral, at equal distance from end of snout and from caudal, longest ray equal to or a little less than length of head. Anal III 17-20. Pectoral 3/4 to once length of  head, not reaching ventral. Caudal forked, with long pointed lobes. Caudal peduncle 1 1/4  to 1 ½ times as long as deep. Scales without anastomosing canals, 39-45,  6½ - 8 ½ scales above lateral line,  3 ½ scales below lateral line, 2 between lateral line and root of ventral. Silvery, bluish or greenish on the back; pectoral and ventral fins sometimes blackish. Total length 460 millim.